Results 21 to 30 of about 121,125 (216)

The Predicted Dielectric Constant of an Amorphous PVDF Changing with Temperature by Molecular Dynamics Simulations

open access: yesInternational Journal of Electrochemical Science, 2018
PVDF, a soft dielectric material, has attracted great attention in the research field of soft smart materials. However, some of the mechanisms for the dielectric and piezoelectric behaviors of PVDF are still not clear.
Taotao Hu, Bingbing Hu, Yabin Yan
doaj   +1 more source

Achieving excellent temperature-stable dielectric properties of -based lead-free ceramics via doping

open access: yesJournal of Advanced Dielectrics, 2023
The lead-free ceramics ([Formula: see text])(0.94[Formula: see text][Formula: see text][Formula: see text]TiO3-0.06BiAlO3)-[Formula: see text]AgNbO3 (denoted as BNBTA-[Formula: see text]AN) were synthesized via a solid-state sintering method.
Li-na Liu   +3 more
doaj   +1 more source

Compounding a High Dielectric Constant Thermoplastic Material for Production of Microwave Photonic Crystals through Additive Manufacturing

open access: yes, 2021
Additive Manufacturing techniques allow the production of complex geometries unattainable through other traditional technologies. This advantage lends itself well to rapidly iterate and improve upon the design of microwave photonic devices, which are ...
Gerardo A., Mazzei Capote   +8 more
core   +1 more source

Permittivity effects of particle agglomeration in ferroelectric ceramic-epoxy composites using finite element modeling

open access: yesAIP Advances, 2018
The size dependence of the dielectric constants of barium titanate or other ferroelectric particles can be explored by embedding particles into an epoxy matrix whose dielectric constant can be measured directly.
Jonas L. Kaufman   +10 more
doaj   +1 more source

Dielectric Characterization of Chinese Standard Concrete for Compressive Strength Evaluation

open access: yesApplied Sciences, 2017
Dielectric characterization of concrete is essential for the wireless structural health monitoring (SHM) of concrete structures. Guo Biao (GB) concrete refers to the concrete mixed and cast in accordance with the Chinese standard. Currently, China is the
Kwok L. Chung   +5 more
doaj   +1 more source

Characterization of Terahertz Dielectric Constant and Pore Structure of Hardened Cement Paste with GEM Model

open access: yesTaiyuan Ligong Daxue xuebao, 2023
Purposes A deep understanding of the pore structure of cement paste is important for improving the performance of cement-based materials. Methods In this paper, terahertz time-domain spectroscopy (THz-TDS) system was used to test the terahertz time ...
Wentao ZHANG   +4 more
doaj   +1 more source

Study on soil dielectric constant models: A review

open access: yesGuan'gai paishui xuebao
【Objective】 Soil dielectric constant measures the ability of a soil to transmit electric fields. It is the ratio of the capacitance of a soil sample to the capacitance of air-filled space of the same volume.
XU Xingqian   +4 more
doaj   +1 more source

Law of relative dielectric constant of coal under different stresses and gas pressures

open access: yes矿业科学学报, 2018
In order to study the law of the relative dielectric constant of coal containing gas, the relative dielectric constant of coal containing gas under different stress and gas pressure is studied by using self-made electrical parameter test system, and the ...
Li Xiangchun   +4 more
doaj   +1 more source

High Dielectric Design of Polymer Composites by Using Artificial Neural Network

open access: yesApplied Sciences, 2022
Polymer-based composites with a high dielectric property have shown great potential in electrical energy storage applications. It is important to predict the dielectric constant in designing polymer composites, but it is costly and time consuming.
Sungyub Ji   +3 more
doaj   +1 more source

Computing the dielectric constant of liquid water at constant dielectric displacement [PDF]

open access: yesPhysical Review B, 2016
The static dielectric constant of liquid water is computed using classical force field based molecular dynamics simulation at fixed electric displacement D. The method to constrain the electric displacement is the finite temperature classical variant of the constant-D method developed by Stengel, Spaldin and Vanderbilt (Nat. Phys. 2009, 5: 304).
Zhang, Chao, Sprik, Michiel
openaire   +2 more sources

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